◎ 题干
-What made little Tony so unhappy and cry in his room?                      
-____to go hiking with his brother.   
[     ]
A.Having not been allowed
B.Not having allowed    
C.Having not allowed    
D.Not having been allowed
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“-What made little Tony so unhappy and cry in his room?-____to go hiking with his brother.[ ]A.Having not been allowedB.Not having allowedC.Having not allowedD.…”主要考查了你对  【现在分词的被动式】【现在分词的完成式】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。